use "...\yls_T2.dta", clear   

*Column 1
reg n_raw_math sunset_time_10, cluster(childid)

*Column 2
reg n_raw_math sunset_time_10 i.woy, cluster(childid)

*Column 3
reg n_raw_math sunset_time_10 lmath i.woy, cluster(childid)

*Column 4
reghdfe n_raw_math sunset_time_10, absorb(childid woy) cluster(childid)

